This 524hp Subaru Impreza WRX STi hits the dyno with equal length headers and a screamer pipe, unleashing the full voice of its EJ25 engine. Expect aggressive pulls, turbo spool, and raw boxer engine ...

How boxer engines work, why they’re not just “flat” engines, and a 120-year evolution traced from the 1899 Benz to the latest Porsche and Subaru boxers. Boxer engines feature flat, opposing pistons ...

We explain why Subaru’s boxer engine layout is especially well-suited for off-roading, from stability to traction advantages. Subaru continues using boxer engines for low center of gravity and ...